Releases of prototype 5.4 of Revenge Of The Cats: Ethernet are now available for Linux, Windows and MacOS X. Take a look at the NEWS file to see what's changed.
ROTC: Ethernet - Prototype 5 - Indie DB
Visit ethernet.wasted.ch or download directly from IndieDB:
In related news, the IndieGoGo crowdfunding campaign to resurrect the game as a proper open-source project by re-creating the game using a modern open-source engine has recently passed its halfway point, but so far only achieved about one third of its goal.